AB-6387
14
Maintenance
WARNING
Before doing maintenance, be sure to turn off the power to this product.
Failure to do so may result in electric shock or device failure.
After maintenance, be sure to reattach the terminal cover.
Failure to do so may result in electric shock.
CAUTION
Do not put a load or weight on this product.
Doing so may damage the product.
Do not touch any parts unless instructed to do so in this manual.
Failure to observe these precautions may result in burns, because actuator parts reach a high
temperature.
•
If the product is not operated for a long period, execute valve open and close operations once a month or so.
•
Execute maintenance according to Table 1.
•
Once every six months or so, visually check that the product operates smoothly.
if a trouble occurs as described in Table 2, take appropriate measures according to the symptom. Although the
measures are taken, if the trouble cannot be recovered, please contact Azbil Corporation.
Table 1 Inspection items and inspection method
Item
Inspection
cycle
Inspection method
Visual check
6 months
•
Loose bolts
•
Damages on the product.
Operation status
6 months
•
Check that the valve is smoothly opened or closed.
•
Check that no abnormal sound or vibration is observed.
Regular inspection
Whenever
necessary
•
Check that the valve is smoothly opened or closed.
•
Check that no abnormal sound or vibration is observed.
•
Check that there is no hunting observed with.
Table 2 Troubleshooting
Abnormal phenomenon
Where to inspect
Measure
The valve is not smoothly opened or
closed.
The valve stops halfway.
The valve does not operate.
Check that the power line and the input signal
are correctly fed.
Loose terminals
Check that wires are firmly connected, no dis
-
connected wire.
Check the power supply voltage and the con-
troller.
Retighten the terminals.
Check the wirings.
The auxiliary switches do not operate.
Check the conditions of the auxiliary switch
cam.
Loose terminals
Check that wires are firmly connected, no dis
-
connected wires are observed.
Do settings again.
Retighten the terminals.
Check the wirings.
The control sensitivity is deteriorating.
The torque is decreasing.
Check that wires are firmly connected, no dis
-
connected wires are observed.
Loose terminals
Check the supplied voltage.
Check the wirings.
Retighten the terminals.
Adjust the supplied voltage. (Excluding the
85–264 voltage type)
